The term usually means cities, villages, townships, counties, and Indian tribal governments. Ĭommunity: The NFIP definition of a community is a political subdivision that has the authority to adopt and enforce floodplain management regulations for the areas within its jurisdiction. But since the 1800s, human activities have been the main driver of climate change, primarily due to the burning of fossil fuels like coal, oil and gas. These shifts may be natural, such as through variations in the solar cycle. A non-residential structure may be elevated or dry floodproofed so that the structure is watertight to prevent the entry of water.Ĭlimate change: Climate change refers to long-term shifts in temperatures and weather patterns. A residential structure built in a Special Flood Hazard Area must be elevated above the Base Flood Elevation. Within the NFIP, residential and non-residential structures are treated differently. However, for NFIP floodplain management purposes, the term “structure” also includes a gas or liquid storage tank that is principally above ground. The terms “structure” and “building” are sometimes used interchangeably in the NFIP. The BFE determines the level of flood protection required by NFIP floodplain development standards.īuilding (structure): A walled and roofed building with two or more outside rigid walls and a fully secured roof that is affixed to a permanent site, as well as a manufactured home on a permanent foundation. Modeling of the base flood uses historic flood data.īase Flood Elevation (BFE): The modeled elevation of floodwater during the base flood. This is the design flood for the NFIP and is used to map Special Flood Hazard Areas and to determine Base Flood Elevations. This section is not all-inclusive of the flood risk management and legal terms used in this Guide additional definitions may be provided elsewhere for ease of reference.īase flood: The flood having a one percent probability of being equaled or exceeded in any given year (previously called the 100-year flood). Many of the following definitions are derived from NFIP floodplain management others are specific legal definitions and yet others relate to NAI tools and approaches.
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